1143651 has 8 divisors (see below), whose sum is σ = 1557504. Its totient is φ = 746120.

The previous prime is 1143647. The next prime is 1143661. The reversal of 1143651 is 1563411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143651 - 2² = 1143647 is a prime.

1143651 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1143601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3915 + ... + 4196.

It is an arithmetic number, because the mean of its divisors is an integer number (194688).

2^1143651 is an apocalyptic number.

1143651 is a deficient number, since it is larger than the sum of its proper divisors (413853).

1143651 is an equidigital number, since it uses as much as digits as its factorization.

1143651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8161.

The product of its digits is 360, while the sum is 21.

The square root of 1143651 is about 1069.4161958751. The cubic root of 1143651 is about 104.5757941617.

The spelling of 1143651 in words is "one million, one hundred forty-three thousand, six hundred fifty-one".